Shear panel building material

Abstract

A shear panel building material that includes a first facing membrane, a core matrix disposed on a face of the first facing membrane, and a semi-rigid or rigid material attached to the core matrix. The core matrix can include microspheres having a size of about 200 microns to about 800 microns, sodium silicate, and ethylene vinyl acetate. In one aspect, the shear panel is substantially free from glue and cement.

1 . A shear panel building material comprising:
 a first facing membrane;   a second facing membrane;   a rigid material situated between the first facing membrane and the second facing membrane, said rigid material being self-supporting; and   a core matrix disposed between said first and second facing membranes, said core matrix including:
 from about 25 wt % to about 60 wt % of microparticles based on wet formulation, 
 from about 20 wt % to about 36 wt % sodium silicate, and 
 from about 2 wt % to about 6 wt % of a vinyl acetate, 
   wherein the rigid material is held in place with respect to the first and second facing membranes by the core matrix.